Tensile test

Why Are Tensile Tests Important?

Tensile tests are performed to determine and verify the mechanical properties of materials or components. These tests are essential for:

• Quality control of materials and products.
• Safety certification for critical applications.
• Development and validation of new materials.
• Compliance with technical specifications and legal standards.

What Is a Tensile Test?

A tensile test is a destructive test used to determine the mechanical properties of a material or component.

A test specimen made of metal or metal alloy is placed in a tensile testing machine and secured using two clamps. The machine then applies a pulling force to the specimen. At Materials Testing Veendam, this is done using hydraulic actuation.

Both the tensile force and the elongation are measured and displayed in a graph. The goal of the tensile test is to obtain essential material properties, such as:

• Elastic modulus
• Yield strength (Rp0.2, Rp1.0, Rt0.5)
• Tensile strength
• Elongation
• Reduction of area

The Process of a Tensile Test

During a tensile test, the length of the test specimen increases under the influence of tensile force. Initially, this deformation is linear/elastic.

Once the elastic limit is reached, the material begins to deform permanently. The tensile force continues to increase until it reaches a maximum, at which point the deformation is evenly distributed along the specimen. The fracture of the test specimen marks the end of the tensile test.

The stress-strain diagram illustrates the progression of the tensile test.

What Do We Measure in a Tensile Test?

During a tensile test, we measure:

• Elastic modulus
• Yield strength (Rp0.2, Rp1.0, Rt0.5)
• Tensile strength
• Elongation
• Reduction of area

Types of Tensile Tests

Tensile tests can be performed in different ways:

• Along the length of the material.
• Across the width of the material.
• Through the thickness of sheet material (to detect lamination).

Most tensile tests are displacement-controlled, where the test specimen is subjected to a specific strain. Alternatively, there are load-controlled tensile tests. Materials Testing Veendam can perform both types of tensile tests.

When Is a Tensile Test Required?

A tensile test is often mandatory according to laws, regulations, standards, and customer-specific requirements, including:

• Welding procedure qualifications in accordance with ISO 9606,
• ASME IX, AWS, or customer-specific requirements.
• Re-testing (upgrading) of 2.2 and 3.1 material certificates.
• Customer-specific requirements for product qualification.

Additionally, a tensile test can be highly useful in the development of new products or components as a supplement to theoretical calculations.

Request a Tensile Test

Do you have questions about tensile testing, or would you like to have a tensile test performed? Contact Materials Testing Veendam. Our accredited laboratory (ISO 17025, L647) is ready to assist you.

Request a tensile test